html,
body {
  overflow: scroll;
}
main {
  overflow: hidden;
}
.course {
  ul {
    margin-top: 10px;
    li {
      border-radius: 10px;
      border: 1px solid #ccc;
      overflow: hidden;
      margin-bottom: 20px;
      a {
        color: #000;
        img {
          width: 100%;
          height: 150px;
        }
      }
    }
  }
}
.foot-div {
  height: 77px;
  width: 100%;
}
